Improvement in portable elevators and conveyers



7 diritti Seite @dated affita 4HENRY C.A CROS-BY, CF CHICAGO, ILLINOIS.

'Letters Patent No. 108,976, dated November 8, 1870.

lMPROYEMENT IN PORTABLE ELEl-IATORS AND CONVEYERS.

The Schedule referred to in these Letters Patent and making part of the same.

lowing to be a full, clear, and exact description there,

of, which will enable others skilled in the art to which my invention appertains to make and use the same, reference being had to the accompanying drawin forming part of this speciiication, in which- Figure 1, plate 1, represents a side elevation of my invention; l

Figure 2, plate 2,-is a vertical longitudinal central section, showing those parts of the machine at the left of the line d d, drawn vertically through fig. 3;

Figure 3, plate 3, is a vertical transverse section, showing those parts of the machine which are at the left hand of line 'e e, shown in iig. l;

Figure 4, plate 3, is a plan or top view of a detached portion of the tramway or railway which is at the right hand ofline e e, tig. l;

Figure 5, plate .3, is a side elevation of a carrier employed for removing wood, bags&c.; and

Figure 6, plate 3, is a side elevation of a self-adjusting carrier-bucket for removing coal, grain, die.

Similar letters of reference indicate corresponding parts in the several figures of the drawing.

rlhe 'object of myinvention is to provide a device by the use of which coal, grain, and other articles of merchandise may be unloaded from ships or oars and conveyed to any desired point upon the dock; and

The nature of'my improvement consists- First, inan elevated tramway or railway suspended from a portable der-rick, the arrangement of which issuch as to admit of being adjusted vertically in a horizontal position to any desired height within the derrick, or to any angle; also longitmlinally forward or backward. At ene cnd of said tramway or railway is jointed a vertical section, so arranged as to freely oscillate upon it-s bearings, whereby the whole may be Y adapted to the size and location of the vessel and' point oi' delivery of merchandise.

Second, in providing said tramway or' railway with an endless-chain belt, to andnpon which is attached and conveyed the several devices for the transmission of merchandise, together with the mechanical construction of the derrick, whereby said tramway or railway and its working part-s may perform their necessary function, a description of which will be hereinafter more fully given.

In the accompanying drawing- Ais a horse-power, giving motion to the moving parts of the machine; but as the same forms no part of the present invention a description thereof is not necessary to be herein fully given.

Pivoted to the forward cud of said power are the vertical uprights B P of the derrick. Said uprights are so arranged as to admit of their upper ends being moved forward or backward, andl firmly secured. at any adjusted angle, by means of slotted tie-braces C C, the lower ends of' -which are firmly bolted to the v frame-work of the power. Said uprights are provided at their upper ends with .a horizontal shaft, D, ex-

tending laterally through thesame.

vertical slots, which receive shaft G of the'tramway or railway.

At or near the platform of said power, and attached to the uprights lof said derrck, is a windlass, H, around which pass ropes or chains h h. Said ropes extend upward and over pulleys f f, on shaft D, thence downward, and are secured to the sides of the tramway or railwayJ. Thus, as -said windlass isl revVJ volved, said tramway is raised or lowered horizontally to any desired height within the dcrrick, andis secured in position by means of pawl and ratchet lof windlass H.

Attached to said nprights is a second windlass, K, which is also provided with a system of ropes or chains, t t, extending upward and over pulleys g g on shaft D, thence obliquely forward and around pulleys l l, secured to the forward end of said tramway, thence backward over pulley m oa on shaft D, and obliquely downward to the rear end of the tramway, and is firmly secured thereto. Thus, as said windlass K is rotated, the forward end of said tramway is raised or lowered to any desired angle above orbelow a horizontal position, as shown in dotted lines, iig. 1, and is Vfirmly secured in. position by means of pawl and ,and desired point of delivery of merchandise.

Said tramwayis provided with a chain-belt, M, passing over and around a systemvof wheels, N, as' indicated by arrows'l, 2, 3, and 4, tig. 1.

The sides of said belt are'connectcd laterally by a system of carrying shafts, O 0, the outer ends of whichr are provided with 'anti-friction wheels n n, which traverse the track of the tramway, thus retaining said belt in proper position.

Fixed to the main sha-ft of the horse-power is a rag-wheel, S, which receives chain-belt l, said belt passing upward and around pulley It, fixed to the upper end of frame E, at or near its bearings, thence downward against or partially around a likerag-wheel, S2, ou the outer end of' shaft Gr.

Uponsaid shaft, between the sides of the tramway, are fixed rag-wheels, l T2, that engage with chainbelt M, by whiclrmotion is communicated to the saine as wheel S of the power is rotated.

Said wheel S is loosely xed upon the shaft, and provided with a clutch and lever U.

Said lever is attached to the upright B of the derrick, and extending obliquely downward to said wheel, and is there bent to a vertical position, passingbetween said wheel and the flanged end of the roller, carrying the endless rotating platform of the power, and is provided, at' its upper end, with a slotted s'tirrop-plate, U2, by which the same is secured in position. Thus, as the upper end of' said lever is moved or forced inward toward the center of the machine, wheel S is disengaged from the clutch' and the curved portion of the lever is thrown against the flanged end of the roller, forming a brake for the same, by which means the proper amount of friction upon the end of said roller may be obtained to secure a uniform motion of the powerf The frame-work of said horse-power is mounted upon or provided with eentnlacting caster-wheels W, whereby said machine may be readily moved in any desired direction, and firmly secured in a fixed position by turning said wheels to a diagonal position with the'power, their construction being such as to admit ofthe same.

The delivery end of `said tramway is suspended from a cable, Q, attached to independent fixed posts X X, shown in tig. 3 of the drawing. i

"Attached to said cable is a carriage, Y, so arranged as to freely move longitudinally thereon.

. Said carriage is providedwith one or more pulleys fr, around or over which pass ropes c, extending downward to said tramway, whereby the same may be readily moved laterally to any desired point, or raised or lowered.

V is a bucket for conveying coal, the bottom of which is' hinged to the sides and secured in a closed position by means of clutch-hooks a a, pivoted to the sides of the bucket, which take into mortiscs out in the upward-projecting flanges of the bottom.

SaidA bucket is provided with hooks b b, by which -the saine is attached to the carrying-shafts O of the tramway.

V2, g. 6, is a bucket for conveying grain.

Said bucket is fixed or hinged to'the carrying-shaft O of the tramway in a manner which admits of its adjusting itself to the same relative position as chainbelt M is made to traverse the different positions of the tramway.

In operating myiuveutiou the 'machine is placed near the front line of the dock, allowing section L of tramway .J to be suspended over orenter the hatchway of the vessel.

Tramway J is then adj usted to the proper position (reference being had to the receiving and delivery of the coal or merchandise) by means of ropes h h, t t, and o of the derrick and carriage.

Wheel S of power A is given a rotating motion, which communicates with chainbelt M- of the tramway by means of belt P, wheels '.l '.l, and S2 of shaft G, giving the same a rotating motion.

Bucket V being filled, is hooked on or attached to shaft O of belt ld, which traverses the tramway, as indicated by arrows 1 and 2.

,Said bucket coming in contact with or between trips a; x, fixed to the lower side of the delivery end of the tramway, thus compressing the upper ends 4of clutch-hooks a a, disengaging the bottom of the bucket, and the coal is delivered upon the dock.

Said bucket then reeedes, as indicated by arrows 3 and 4, to the vessel, and is there removed from said shaft (by hand or by any other suitable mechanical device) preparatory to being filled. v

In using my invention, should it be found necessary to allow said belt M to remain stationary to admit of filling the buckets, clutch-lever U is moved inward toward the center of themachinc,whicl1 disengages wheel Sfrom the shaft of power A, and the curved surface of' said lever' is brought against the flanged end of the roller carrying the endless platform, and a uniform motion is obtained.

Having thus described the nature and object of my invention,

lV hat I claim as new, and desire to secure by Letters Patent, is-

l. The jointed section L, having the movements described, witb the tramway J, the whole arrange-d substantially in the manner and for the purpose set forth.

2. Chain-belt M, provided with carrying-shafts O O, in combination with tramway J, the severalA parts arranged substantially as and for the purpose specified.

3. 'lhe adjustable uprights B B of' the dei-rick, when pivoted to power A as described, whereby the same may be moved forward or backward, substantially as and for the purpose specified. -4

4. Caster-wheels IV, arranged to operate by means of levers, as described, in combination with frame A and uprights B B, the whole arranged in the manner and for the purpose set forth.

5. Bucket V, provided with clutch-hooks la. a, and arranged to operate in the manner described, in combination with traps a: a', the whole constructed substantially as and for the purpose specified.

6 Seltadjusting bucket V2, arranged substantially iu the manner-and for the purpose set forth.

7 A portable elevator and conveyer, consisting of an adjustable jointed tramway mounted upon an adjustable fra|ne,and' provided with an endless conveying chain, substantially as described, for the purpose specified.

8. The endless chain operated from the horse-power A through the medium of the endless chain I? and rag-wheels S Sz and Il T, substantially us herein shown and described.

- 9. The adjusting ropes 71. t, arranged for adjusting the tramwayr and endless conveyer-chaiu M from the wiudlasses H K, substantially as herein shown and described.

10. The adjustable frame E, in combination with the adjustable uprights B, and the adjustable tnamway J, substantially as described, for the purpose specified.

1.1. The adjustable whecllt, in combination with the frame E and endless chain I, substantially as described, f'or the purpose specified.

The above specification of my invention signed by me this 26th day of August, 1870.

Vitnesscs: HENRY C. CROSBY.

C. H. Fnosr, 4 E. A. ELLsWoaTH. 

